The invention discloses a steady-state solid-liquid two-phase solute concentration distribution model in a continuous reverse flow mass transfer process. The volume flow of a solid phase in a model independent variable is changed; Volume flow rate of liquid phase, the retention time of the solid phase in the continuous reverse flow mass transfer space is reserved, the coefficient of an equation set and the intermediate parameter of a matrix equation are obtained again, and a solute concentration distribution matrix meeting the expected requirement, the volume flow of the solid phase corresponding to the distribution matrix, the volume flow of the liquid phase and the retention time of the solid phase in the continuous reverse flow mass transfer space are obtained; The model utilizes a CFDmodel to obtain a flow field matrix. performing finite element redivision on the continuous countercurrent reaction process on the basis; meanwhile, solid-liquid two-phase diffusion mass transfer andconvection mass transfer are considered, a solid-phase, liquid-phase and boundary solute conservation equation set is established, compared with a mass transfer process directly defined in a CFD original program, calculation resources are greatly saved, the calculation efficiency of concentration field distribution is improved, and the method is more convenient to write into hardware to carry outlow-cost operation.

Su Jianyu

Papers

steady-state solute concentration distribution model in a continuous countercurrent two-phase mass transfer process